Abstract
Mirror-like cutting of ferreous metals with CBN cutting tools is discussed experimentally in this paper. For the purpose of the mirror-like cutting, single crystal CBN cutting tools are developed. The wearing test of the single crystal CBN is carried out to ascertain the optimum crystallographic orientation of flank surface. The wear resistance in direction on (111) plane is the largest, so the (111) plane is chosen as the flank surface for single crystal CBN tools, and direction on (111) plane as the cutting direction on the flank surface. The polished flank surface roughness of 0.005-0.008 μmRmax can be obtained using fine diamond grinding wheel whose working surface roughness is kept within 1 μmRmax. Using this single crystal CBN cutting tool, machined surface roughness of less than 0.05 μmRmax has been achieved for hardened stainless steel (HRC 52). Although the tool lives in single crystal CBN tools have not been sufficient (about 200 m cutting length), the use of the new tools expected in a drastic reduction of the polishing time for the hardened stainless steel mold dies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Society for Precision Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
